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AssigneeSony Corporation
InventorsHiroaki Ono, Seiji Kobayashi, Tomoo Mitsunaga, Ken Nakajima, Chikako Sano, Nobuyuki Sato
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An apparatus and a method as well as a storage device of the present invention transform intensity levels with consideration of both features of the intensity levels in an input image and human visual characteristics, wherein the present invention includes the steps of inputting wider dynamic range digital image data, generating a histogram of intensity levels of the image data, generating a histogram equalization LUT by cumulating the histogram, generating a visual characteristics LUT with reference to the histogram equalization LUT, generating a combined LUT by combining the histogram equalization LUT and the visual characteristics LUT, and correcting the image data.
An image processing apparatus for correcting a gradation of input image data, comprising:
An image processing method of an image processing apparatus for correcting a gradation of input image data, the method comprising the steps of:
A storage medium for storing a computer readable program for image processing to correct a gradation of input image data, the program comprising:
A storage medium as claimed in claim 27, wherein the transforming step transforms a dynamic range of the intensity levels of the image data using the second look up table.
Dependencies are inferred from the claim text.